BMW

BMW questions? Ask a BMW repair Expert for answers.

Ask an Expert,
Get an Answer ASAP!

BMW error codes

Customer Question
BMW error codes
Submitted: 8 years ago.Category: BMW
Ask Your Own BMW Question
Answered in 5 minutes by:
6/27/2010
BMW Mechanic: Steve, BMW Expert replied 8 years ago
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 25,939
Experience: BMW Expert
Verified
Hi, any drivability concerns?
Ask Your Own BMW Question
Customer reply replied 8 years ago
Drives fine no apparent problem, just the check engine light is on
BMW Mechanic: Steve, BMW Expert replied 8 years ago

Thanks.

 

The lean codes are something that is generally set by a unmetered air leak aka a vacuum leak.

 

 

Unmetered air leaks allow excess air into the engine and cause the fuel/air mixture to go out of alignment and cause idle fluctuation like you are experiencing. They would also set the fault codes you have.

 

To check for vacuum leaks, visually inspect the intake area for any cracked hoses/pipes. If you can't see anything, you can try this trick: spray a can of carb cleaner around the intake with the engine idling. If the idle changes, this indicates that the cleaner is entering the engine and you have localized the area of the leak. You can then inspect further.

 

Most common source of air leaks is from the rubber intake tubes between the airbox, and the throttle.

 

Another common issue that causes this problem is a failed crankcase vent valve. This is located under the intake, in front of the throttle body. This valve regulates a vacuum on the crankcase, when they fail, a high vacuum is put on the crankcase - giving an unmeterd air leak. You can check for this by removing the oil cap with the engine running, if the engine stalls, or idle dips a lot, and there is a high vacuum holding the oil cap down, then this valve has failed.

 

If no intake leak can be found, then it may be a failed mass airflow sensor that it causing the lean condition. I would check for intake leaks first though.

 

For the cam sensor fault, this generally indicates that the sensor itself has failed and will need to be replaced.

 

I hope that helps. Please let me know if you have any further questions. Please press the ACCEPT button if satisfied with my assistance, as this is the only way I am compensated for my time and effort. I am not compensated until you press ACCEPT.

 

Cheers,

 

Steve



Edited by Steve on 6/28/2010 at 1:04 AM EST
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 25,939
Experience: BMW Expert
Verified
Steve and 87 other BMW Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago
Steve how do I test the cam sensors to determine which one is bad? I am showing a code of P0340 but no information on which of the two sensors is bad
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a bmw mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Steve Your Own Question
Steve
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 25,939
25,939 Satisfied Customers
Experience: BMW Expert

Steve is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

Roger

Roger

BMW Master Tech

3,050 satisfied customers

10 yrs. experience as BMW Master Technician, shop foreman and dealer.

Marty

Marty

ASE Certified Technician

559 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

bimmaster

bimmaster

BMW Technician

1,838 satisfied customers

3 years dealer experience, master bmw tech

Sam

Sam

BMW Master technician

1,043 satisfied customers

BMW S.T.E.P. graduate, 10 years BMW dealership experience

Thebmwbum

Thebmwbum

BMW Foreman

714 satisfied customers

31 years BMW Experience

mike

mike

BMW Technician

694 satisfied customers

bmw master tech ase certified

Matt

Matt

Engineer

447 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

< Previous | Next >

Related BMW Questions
Error code has ocured 3 to 4 different occasion at speeds of
Error code has ocured 3 to 4 different occasion at speeds of 60 mph. … read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
My BMW m6 e63 2006 is giving me the error 4F21 SMG
Hello, my BMW m6 e63 2006 is giving me the error 4F21 SMG Transmission Control Evaluation of Estate. I haven't been able to find a solution about this specific code in all internet and bmw forums.... … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Replaced the DMTL pump 2010 bmw 328i but still getting a
replaced the DMTL pump 2010 bmw 328i but still getting a fault code. it says "Current too high while switching selonoid test" … read more
Kenny
Kenny
Vocational, Technical or Trade Scho
889 satisfied customers
Getting increased emissions error, 84000, 2005 BMW 645CI,
car was smoking. had fixed with warranty but error keeps coming on… read more
JayPutelis
JayPutelis
Associate Degree
565 satisfied customers
My 00 bmw 323i keeps throwing a p0340 error intake cam
My 00 bmw 323i keeps throwing a p0340 error for the intake cam position sensor. Dealer checked the part and it checked out okay. Wiring harness to ecu checked for broken wires, none found. Harness oka… read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
Have code 5E59 coding error trying to see with snap on scan
have code 5E59 coding error trying to see with snap on scan tool to clear or fix cant find any info … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
e90: Hi, I had encounter a fault code stating 2DCA for EGS
Hi, I had encounter a fault code stating 2DCA for EGS control unit does not knows what does this error code means. Any idea on this issue? Its for BMW e90 jerking on drive start.… read more
CHEVYEATER351
CHEVYEATER351
Associate Degree
97 satisfied customers
m6: 2007 BMW m6 fails to connect to ecu. SMG errors. INPA
2007 BMW m6 fails to connect to ecu. SMG errors. INPA connects and is able to read codes and clear them but when i go to adapt clutch or try to pull up my info in NCS, it reads my vin but then i get a… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Z4: I had a BMW Z4 2003 that shown error 299A -Error Manage
I had a BMW Z4 2003 that shown error 299A -Error Manage EGS. What tha code mean. Is there any bad sensor?… read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
335i: My 2011 BMW 335i has shown the error code P115D after
My 2011 BMW 335i has shown the error code P115D after putting a diagnostic machine on it.....can i please know what this means.… read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
Scan tool will not read codes! Mini Cooper R50, 2003 Unable
Scan tool will not read codes! Mini Cooper R50, 2003 Unable to read codes. I am able to reset and clear the codes, but can not read them. I am aware BMW has a proprietary OBD for this year but I have … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Cooper: OBD not reading, 2003 Mini Cooper R50, have tried several
OBD not reading, 2003 Mini Cooper R50, have tried several bmw obd cables and scan tools, even local BMW shops, can't get an accurate reading. With BMW scan cable and scan tool I can reset an OBD error… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Bmw: Z4..3.0 and had a friend run errors on it and came
I have a 2003 Z4 bmw 3.0 and had a friend run errors on it and came up with error code P-1887. Can you tell me what this means?… read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
2001 BMW: Z3..convertible..airbag light..which are only known by BMW.
I have a 2001 BMW Z3 convertible with several error lights on, including the airbag light. Also, the DSC button will not work. He claims he can fix the problem but not until he knows what the codes ar… read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
2006 530i: System Fault..my local dealer..there is nothing wrong
My 2006 530i Wagon displays "Level Control System Failure" and "Level Control System Fault" regularly but my local dealer keeps telling me there is nothing wrong when he runs diagnostics. I don't beli… read more
Steve
Steve
BMW Expert
Master's Degree
25,939 satisfied customers
2010 bmw: z4..automatic..i have a computerized scan tool
i have a 2010 bmw z4 3.0 automatic. i have a computerized scan tool. the tool is reporting one error. the error code is E704 and is in the heating and air conditioner control unit. i need to know exac… read more
GEORGEBMW1
GEORGEBMW1
Auto Repair Shop Owner
Virgina Automotive Technical Instit
61 satisfied customers
1997 540i: intermittently...had..master..me that one of my trans
1997 540i. auto transfail comes up intermittently, sometimes a lot, sometimes occasionally.had my certified master mechanic run diagnostics and he informed me that one of my trans. solenoids was bad. … read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
The fey fob will unlock but not lock doors..central locking..console
Hi I have a 51 plate Mini Cooper and the central lcoking has stopped workin. The fey fob will unlock but not lock doors. The central locking button one the car console will not work either. The boot w… read more
KJ
KJ
Master Tech
Master's Degree
90 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x